> (2) Touchpad and Trackbar
>
> Using touchpad or trackbar on laptop computers, I think that
> defaults scroll too fast, especially by trackbar. Don't you think
> so?
On my machine (macOS El Capitan), the default scroll speed is about
3,000 lines per second in windowed mode. Disabling progressive speed
reduces that to about 300 lines per second. Meanwhile in the terminal
it's around 60 lines per second... quite the range!